Good morning , Mr Bell . How are you today ? Are you here to sort out your L / C documents ?   Yes . I've been through them and there's a problem , a rather major discrepancy actually . You see ? It should be KN509 .   I see , here it says KM509 .   Exactly , if we accept these it could cause a lot of problems in our record and our accounts system because the numbers don't match .   Yes , I see what you mean . You need to reject these documents . 